Product Structure:

CTAB;Cetyltrimethylammonium bromide

Size :

1g（Specifications can be customized）

Product details:

CTAB (Cetyltrimethylammonium bromide) is a quaternary ammonium surfactant commonly used in various fields such as chemistry, biology, and material science.

Structure: CTAB consists of a long hydrocarbon chain (cetyl group) attached to a positively charged nitrogen atom. The cetyl group provides hydrophobic properties to the molecule, while the positively charged nitrogen offers a hydrophilic head.

Solubility: CTAB is soluble in water and other polar solvents due to the presence of the hydrophilic head. However, its solubility decreases with increasing temperature. At lower temperatures, it can form micelles, where the hydrophobic chains aggregate in the core, while the hydrophilic heads face the aqueous medium.

Stability: CTAB is generally stable under normal conditions. However, it can be affected by factors like temperature, pH, and the presence of other substances. High temperatures can lead to the degradation of CTAB, reducing its stability. It is also sensitive to pH changes, with the highest stability observed at neutral to slightly alkaline pH. Additionally, the presence of certain ions or molecules can cause CTAB to undergo phase separation or lose its solubility.

Description:

CTAB, also known as cetyltrimethylammonium bromide, is a cationic surfactant with various properties.

1. Solubility: CTAB is soluble in water and organic solvents like ethanol and chloroform. It forms clear solutions in water, but can become turbid at high concentrations or low temperatures.

2. Micelle formation: CTAB molecules can self-assemble in aqueous solutions to form micelles. These micelles have a hydrophilic head and a hydrophobic tail, enabling them to solubilize hydrophobic substances.

3. Surfactant behavior: CTAB exhibits excellent surfactant properties, including surface tension reduction, wetting ability, and emulsification. It can stabilize emulsions and form stable foams.

4. Charge properties: CTAB is a cationic surfactant, meaning it carries a positive charge. This enables it to interact with negatively charged particles, such as proteins, DNA, and cell membranes.

5. Biological applications: Due to its positive charge, CTAB is commonly used in molecular biology for DNA extraction and purification. It can bind and precipitate DNA, separating it from other cellular components.

6. Toxicity: CTAB is generally considered to have low toxicity, but it can cause irritation and damage to the eyes, skin, and respiratory system at high concentrations.

Storage conditions:

Store at - 20 ℃. Avoid frequent thawing and freezing.

Note: The products sold by our company are only used for scientific research, not for human experiments or human treatment.

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